APA (7th ed.) Zitazioa
Farmer, A. (1997). Managing environmental pollution. Routledge.
Chicago Style (17th ed.) Zitazioa
Farmer, Andrew. Managing Environmental Pollution. New York: Routledge, 1997.
MLA (9th ed.) Zitazioa
Farmer, Andrew. Managing Environmental Pollution. Routledge, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.